Invincible, the football movie shooting here with Mark Wahlberg and Greg Kinnear in the leads, needs footballers to play rough-touch before the cameras. It's a last-minute thing: Tryout will be at 5:30 p.m. today at Scanlon Recreation Center at J and Tioga Streets. Prospects must be age 18 or older and no taller than 6-foot-2; bring cleats and running attire. Info: 215-546-4140.